Textile machinery



Oct. 13, 1936. A. RICHTER 4 TEXTILE MACHINERY Filed NOV. 27, 1933 4, Jar:

Patented a. 13, 1936 UNITED STATES PATENT OFFICE 6 Claims.

This invention relates to textile machinery, and particularly to flatv hosiery frames.

As a matter of experience, in flat hosiery frames I by subdividing the narrowing rods or by resort-. ing to. similar makeshifts, which involved considerable expense and interfered with the clear arrangement of the machine. For example, the subdivision of the narrowing rods requires for every subdivided part special adjusting means, even if the rod portions are controlled merely by auxiliary adjusting devices fully governed by the pattern mechanism.

The construction according to the invention diilers fundamentally from knowndesig'ns in so far. as the narrowing rods for instance are fully protected against the influence of temperature according to requirements. The feature of the in vention is that elongated parts of textile machines, particularly flat hosiery frames, which on account of their form and nature respond relatively rapidly to ambient temperature fluctuations as regards elongation and contraction, are insulated against temperature influences whereby in the cooperation of said elongated parts and of functional devices carried thereby with other elongated parts and functional devices which respond relatively slowly in their elongation and contraction to ambient temperature fluctuations; is preserved substantially unaltered during 40 periods of warming up and cooling down. It will be understood that when the temperature has become steady after a rise or a drop, both the rapidly responsive parts and the slowly responsive parts will eventually elongate or contract to an equal extent and that the cooperation between them which existed under steady temperature conditionbefore the rise or drop will be unchanged under the different steady temperature condition prevailing after the rise or drop. The insulation of the more rapidly responsive parts thus ensures that this cooperation, even in the case of devices cooperating with each other in very limited ranges longitudinally of the elongated p rts. will remain undisturbed during periods of warming up'and W cooling down. It is obvious that the invention can Germany December 5, 1932 be applied in a very simple and cheap way without altering the construction of say the narrowing rods and their adjusting means simply by providing the parts to be insulated with a coating consisting of a poor heat conductor. Insulations 5 of this kind are known already but employed till now for other purposes, such as preventing losses of heat, etc.

By way of example, the invention is illustrated in the accompanying drawing, in which Figure 1 is a front view of the narrowing rod and clock point bar of a flat hosiery frame, only the clock point being iitted with needles for the sake of greater clearness; and Figs 2 and 3 are cross sections on a somewhat enlarged scale of the clock point bar.

Referring to the drawing, the carrier bar I for the bearings l of the narrowing rods 2, and clock point bars 3 as well as the narrowing rods 2 and clock point bars 3 themselves extend, as a rule, in known manner over the entire length of the machine and are relatively thin, whereby they would elongate andv contract relatively rapidly in response to temperature changes. During large variations in temperature the bars 2, 3 will therefore undergo achange in length to such an extent that their covering needles cannot cooperate any more with the frame needles, which are fixed in a more massive part of the machine whereof the length responds more slowly to ambient temperature fluctuations. For this reason, these parts, and particularly the clock point bar 3, are insulated according to the invention against the influences of temperature, the clock point bar 3 being for instance insulated simply by providing it with a coat consisting of a poor heat conductor (Fig. 3) or by covering it with detachable shells 6 made of insulating material, such as wood (Fig. 2) and securedto the clock point bar 3 by means of clips 8 or other suitable means.

In certain textile machines only one set of transfer points are carried by the rapidly responsiveparts to variations of temperature, and these points are in alignment with the needles of the machine.

If the shells 5 are firmly connected with the clock point bar 3, their length must be dimensioned so as not to interfere with the axial working motions of the clock point bar 3. K

It is of course possible to insulate still. other parts of a flat hosiery frame against influences of temperature in order to prevent service troubles due to changes in temperature. The invention can further be applied to other hosiery machines g5 and to all textile machines subjected to similar conditions as fiat hosiery frames.

I claim:

1. In a textile machine, an elongated element of thin cross section carrying functional devices. said element being movable axially through a limited range, an elongated element of greater cross section carrying functional devices cooperating with the first mentioned functional devices in their limited range of axial movement, and shells of heat insulating material on the element of thin cross section adapted to substantially equalize the elongations and'contractions of said elements when they are both exposed to the same temperature fluctuations, said shells being arranged to avoid obstruction of the axial movements of said element of thin cross section.

2. A textile machine, particularly a fiat hosiery frame having rapidly and slowly responsive parts to variations of temperature relative to said parts, said rapidly responsive parts carrying transfer points, comprising insulating means on the rapidly responsive parts so that upon exposure to temperature variations the changes in the rapidly responsive parts will be retard( i whereby all the parts will expand or contract uniformly to maintain the transfer points in alignment with the needles of the machine, said insulating means being arranged to avoid obstruction to. the movements of said rapidly responsive parts while covering an effective area thereof.

3. A textile machine, particularly a flat hosiery frame having rapidly and slowly responsive parts to variations of temperature relative to said parts, said rapidly responsive parts including narrowing rods and clock point bars carrying clock points, comprising insulating means on the rapid- 1y responsive parts so that upon exposure to temperature variations the changes in the rapidly responsive parts will be retarded whereby all the parts will expand or contract uniformly to maintain the clock points in alignment with the needles of the machine, said insulating means being arranged to avoid obstruction to the movements of said rapidly responsive parts while covering an effective area thereof.

4. A textile machine according to claim 3, in which theinsulating means is a coating of a poor heat conductor.

5. A textile machine according to claim 3, in

which the insulating means comprises a detachable shell of insulating material.

6. A textile machine according to claim 3, in which the insulating means comprises a detachable shell oi insulating material and securing clips for the shell.

ARTHUR RICHTER. 

